Variable corresponding to the sum
Let x be a random variable corresponding to the sum of the numbers on two fair dies(Hints, 2,3,4,....,12), Find the probability of P{x<8}.
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A sample of 2 different calculators is randomly selected from a group containing 18 that are defective and 37 that have no defects. What is the probability that the 2 calculators chosen have no defects? What is the probability that the 2 calculato
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